CN202001425U

CN202001425U - Selector switch device of high-low pressure inflator

Info

Publication number: CN202001425U
Application number: CN2010206936506U
Authority: CN
Inventors: 程荣波
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-12-31
Filing date: 2010-12-31
Publication date: 2011-10-05
Anticipated expiration: 2020-12-31

Abstract

The utility model discloses a selector switch device of a high-low pressure inflator. The device is arranged at an inflator body with a high pressure piston and a low pressure piston, and comprises a conversion seat, a conversion switch, a sealing ball and a sealing head. The conversion seat and the conversion switch are arranged on the right part of the inflator body and are pressed on the inflator body by the sealing head. The conversion seat is provided with a pressure relief hole communicated with a channel corresponding to the high pressure piston. A horn mouth is arranged below the pressure relief hole and is communicated with the pressure relief hole. The sealing ball is prepared from an elastic material and is mated with the horn mouth. The conversion switch is coaxial with the conversion seat and can rotate around a shaft. And a recessed groove and a protruding block are disposed at the conversion switch to correspond to the sealing ball, and centers of both the recessed groove and the protruding block are located on the same circle, wherein the center of the circle is at the rotation axis of the conversion switch. The advantages of the utility model are that not much force is needed by a user when conversion air pressure is output, and the device is easy to operate and not easy to break down.

Description

A kind of selector switch device of high low pressure coenosarc inflator

Technical field

The utility model relates to the inflator technical field, especially relates to a kind of selector switch device of high low pressure coenosarc inflator.

Background technique

The inflator that a kind of high low pressure coenosarc is arranged in the market.General, its structure is: be provided with piston cylinder in the inflator body, piston cylinder and relief opening are communicated with, and are provided with two different pistons of diameter in the piston cylinder: the relative little low pressure piston with diameter of the high pressure piston that diameter is big relatively.Be disposed with conversion seat, throw over switch and pressure at the right-hand member of inflator body and put their end socket; All has certain clearance between the above three.Conversion seat is provided with the pressure relief vent that the service aisle with the high pressure piston correspondence is communicated with, and pressure relief vent has horn mouth, supporting resilient ball sealer in the horn mouth.Throw over switch has can be along the plane plate of the reciprocal horizontal sliding of Vertical direction of inflator body, and the position of this plate left-hand face and ball sealer correspondence is provided with a lug boss.Like this, when the higher delivery pressure of needs, promote the plate of throw over switch, make the lug boss on the plate push down ball sealer, the pressure that the high and low pressure reciprocating motion of the pistons is produced all outputs to relief opening; When not needing higher delivery pressure, back promote the plate of throw over switch, make the lug boss on the plate leave ball sealer, like this, the pressure that high pressure piston produces is discharged to atmosphere from pressure relief vent, and the pressure that has only low pressure piston to produce enters relief opening, makes the user comparatively laborsaving.But such inflator throw over switch promotes inconvenient, particularly promote to be provided with the plate of lug boss not too easily for old man and child, and this plate damages easily.The another one shortcoming is that in case plate damages, whole switch gear is scrapped at once, the waste resource.Therefore be necessary to be improved.

The model utility content

At the deficiency that above-mentioned prior art exists, the purpose of this utility model provides a kind of selector switch device of high low pressure coenosarc inflator, even if it is for old man and children, operates also very easy.Further the purpose of this utility model is: selector switch is longer device lifetime.

To achieve these goals, the technological scheme that the utility model adopted is: a kind of selector switch device of high low pressure coenosarc inflator, this device are arranged on the inflator body with high and low pressure piston, comprise conversion seat, throw over switch, ball sealer and end socket; Conversion seat and throw over switch are arranged on inflator body right-hand member and are put on the inflator body by the end socket pressure; Conversion seat is provided with the pressure relief vent that the service aisle with the high pressure piston correspondence is communicated with, and the pressure relief vent bottom is communicated with it is provided with horn mouth; Ball sealer is that elastic material is made and cooperated with horn mouth; Throw over switch is coaxial in changing seat and can rotate around the axis; Simultaneously, the position of itself and ball sealer correspondence is provided with groove and projection; Simultaneously, the center of this groove and projection all is positioned at the center of circle on the same circle on the rotation axis of throw over switch.Pressure is put and is referred to by end socket is fixed on the inflator body, but the conversion seat is fixed in the piston cylinder and throw over switch and its close contact throw over switch can rotate.Fixing mode can be to snap in, and also can be any way such as to be screwed into.

For the rotation throw over switch of locating, throw over switch front end shaft core position is provided with positioning shaft, and the conversion seat is provided with the positioning hole that is mated.

Also be provided with secondary groove, secondary projection with groove, projection along the axle center symmetry on the described throw over switch.Like this, when groove and projection appearance damage, attached groove and secondary projection are then played a role, original relatively technology of life-span of switch gear is improved through rotating.

---projection cooperates and secondary groove---secondary projection cooperates and situation about using occurs mixing for fear of groove, and the conversion seat is provided with dividing plate.Like this, under the normal condition, only fluted and projection is used and carries out work, and attached groove and secondary projection are not used the shape body owing to being stopped to be in by dividing plate.Have only when groove and/or projection appearance damage,, make secondary groove and secondary projection enter working state just by ressembling.

Further for the ease of rotation, the bottom of throw over switch is provided with handle, the corresponding handle hole that is provided with on the end socket.

For the ease of installing and maintenance, end socket is screwed onto on the inflator body.

After adopting said structure, the utility model is compared the advantage that is had with prior art: throw over switch acts on ball sealer by the lug boss on the plate of the original plane of original promotion, changing the present rotary sampling switch that passes through into makes groove and projection act on ball sealer, because rotate for horizontal sliding, user's application of force is less, even if make throw over switch for old man and the children easy operating that also becomes, and become not fragile.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is an embodiment's of the present utility model installment state structural representation.

Fig. 2 is the plan view of the utility model embodiment's conversion seat.

Fig. 3 is that the D-D of Fig. 2 is to view.

Fig. 4 is that the C-C of Fig. 2 is to view.

Fig. 5 is the rear view of Fig. 2.

Fig. 6 is the plan view of the utility model embodiment's throw over switch.

Fig. 7 is that the B-B of Fig. 6 is to view.

Fig. 8 is that the A-A of Fig. 6 is to view.

Fig. 9 is the rear view of Fig. 6.

Figure 10 is the main sectional view of the utility model embodiment end socket.

Figure 11 is the left view of Figure 10.

Embodiment

Embodiment, see shown in Figure 1: inflator body 1 inside is provided with piston cylinder 13, and piston cylinder 13 inside are provided with coaxial high pressure piston 12 and low pressure piston 11.And the passage of two

piston

11,12 correspondences all is communicated with relief opening (not shown on the figure), and this relief opening is used for discharging outward the gas of pressure.Set gradually conversion seat 2, throw over switch 3 in the right part of inflator body 1, the two is gapped adjacent, and is fixed on the inflator body 1 by end socket 5.So-called gapped be meant between the two adjacent side or comparatively coarse or edge all has the slit can be held the air communication mistake in a word, also can be described as unsealed.

Extremely shown in Figure 5 as Fig. 1: conversion seat 2 is coaxial in inflator body 1, is being provided with pressure relief vent 21 away from axial location, and the right part of pressure relief vent 21 is set to horn mouth 23.Be placed with rubber-like ball sealer 4 in the horn mouth 23, can make by rubber such as sealing ball 4.This pressure relief vent 21 is communicated with the service aisle of high pressure piston 12 correspondences.The axial location of conversion seat 2 is provided with positioning hole 24.To the perpendicular direction of the line of the axis of conversion seat 2 and by axis, on the right flank of conversion seat 2, run through the dividing plate 25 that is provided with projection of whole right flank along horn mouth 23 centers.Certainly, at positioning hole 24 places, dividing plate 25 has breach.Be provided with seal arrangement 22 between conversion seat 2 outer surfaces and the piston cylinder 13, be optimized for and adopt the O RunddichtringO.Circumferential outer surface at conversion seat 2 is provided with conversion seat stand rank 26.

Extremely shown in Figure 9 as Fig. 1 and Fig. 6: throw over switch 3 is coaxial in conversion seat 2, and coaxial mode can be taked to realize waiting any way such as being positioned at piston cylinder jointly.Be optimized for: throw over switch 3 is provided with and changes the positioning shaft 34 on the axis that is positioned at throw over switch 3 that seat 2 positioning hole 24 cooperates.Have the mode in gap between certain aforesaid conversion seat 2 and the throw over switch 3, also can realize by the depth of adjustment positioning hole 24 or the length of positioning shaft 34.Corresponding to the position of horn mouth 23, the left surface of throw over switch 3 is provided with groove 311 and projection 321.Be provided with secondary groove 312 and secondary projection 322 along the axis symmetry of throw over switch 3.The center of two grooves 311,312 and two projections 321,322 all is positioned on the same circle, and the center of circle of this circle is positioned on the axis of throw over switch 3, and obviously, this radius of a circle should arrive the perpendicular distance of the axis of conversion seat 2 for the center of horn mouth 23.Simultaneously, the external peripheral surface at throw over switch 3 is provided with switch step 36.And, any outermost point of switch step 36 from the distance of axis less than the distance of conversion seat stand rank 26 any outermost point from axis.Right lateral surface at throw over switch 3 is provided with handle 33.This handle 33 can be set to common form, stirs as long as be beneficial to.

As Fig. 1, Figure 10, shown in Figure 11: end socket 5 is provided with respectively first step 561 and the second step 562 with conversion seat stand rank 26, switch step 36 correspondences.End socket 5 also has the through hole that can hold handle 33 rotations.The left end internal surface of end socket 5 is provided with internal thread, and at this moment, the right-hand member outer surface of inflator body 1 is provided with corresponding outside thread.Like this, when end socket 5 was tightened on the inflator body 1, first step 561 was turned left and is pushed down conversion seat stand rank 26, and second step 562 is turned left and pushed down switch step 36.

Working principle of the present utility model is: as the exhaust of need than highpressure, then handle with sleeve 33, make projection 321 crush seal balls 4, at this moment, sealing ball 4 extruding horn mouths 23, pressure relief vent 21 is airtight, and the high and low pressure piston 12 like this, the 11 pressurized air total numbers that to-and-fro motion produces in piston cylinder 13 enter relief opening, make relief opening discharge the air of big pressure.

As the more hypobaric exhaust of need, then the backward rotation handle 33, make groove 311 aim at ball sealer 4, at this moment, sealing ball 4 no longer pushes horn mouth 23, and pressure relief vent 21 is opened, and high pressure piston 12 pressurized air that to-and-fro motion produces in piston cylinder 13 is discharged in the atmosphere by pressure relief vent 21 like this.The pressurized air that has only low pressure piston 11 to-and-fro motion to produce enters relief opening, makes relief opening discharge the air of relatively low pressure.Certainly, this moment, the user felt very laborsaving because only need to force in low pressure piston 11.

When groove 311 and/or projection 321 appearance damages, then pull down herein for spinning off end socket 5, make the constraint of throw over switch 3 away from dividing plate 25, then 180 degree rotation throw over switches 3 make secondary groove 312, secondary projection 322 correspond to the position of original groove 311, projection 321, tighten end socket 5 then.Like this, do not need to change the life-span that any accessory has promptly increased this switch gear.

The generation principle of high and low pressure gas and mode that pressure relief vent is communicated with atmosphere are same as the prior art or be known technology in the high and low pressure piston coenosarc inflator, repeat no more here.

Claims

1. the selector switch device of a high low pressure coenosarc inflator, this device is arranged on the inflator body with high and low pressure piston, comprises conversion seat, throw over switch, ball sealer and end socket; Conversion seat and throw over switch are arranged on inflator body right-hand member and are put on the inflator body by the end socket pressure; Conversion seat is provided with the pressure relief vent that the service aisle with the high pressure piston correspondence is communicated with, and the pressure relief vent right-hand member is communicated with it is provided with horn mouth; Ball sealer is that elastic material is made and cooperated with horn mouth; It is characterized in that: described throw over switch is coaxial in changing seat and can rotate around the axis; Simultaneously, the position of itself and ball sealer correspondence is provided with groove and projection; Simultaneously, the center of this groove and projection all is positioned at the center of circle on the same circle on the rotation axis of throw over switch.

2. the selector switch device of high low pressure coenosarc inflator according to claim 1 is characterized in that: the left end side shaft core position of described throw over switch is provided with positioning shaft, and the conversion seat is provided with the positioning hole that is mated.

3. the selector switch device of high low pressure coenosarc inflator according to claim 1 and 2 is characterized in that: on the described throw over switch with groove, projection with also be provided with secondary groove, secondary projection along the rotation axis symmetry.

4. the selector switch device of high low pressure coenosarc inflator according to claim 3 is characterized in that: described conversion seat is provided with dividing plate.

5. the selector switch device of high low pressure coenosarc inflator according to claim 1 is characterized in that: the bottom of described throw over switch is provided with handle, the corresponding handle hole that is provided with on the end socket.

6. the selector switch device of high low pressure coenosarc inflator according to claim 1 is characterized in that: described end socket is screwed onto on the inflator body.